<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
  <style>

  </style>
</head>
<body>
<div>
  <video src="./images/jinxuan.mp4" controls  width="500px" height="500px">
        
  </video>
  <video src="./images/jinxuan.mp4" controls  width="500px" height="500px">
        
  </video>
</div>
</body>
<script>
  //获得video标签的DOM
  var videolist = document.getElementsByTagName('video')
  console.log("获得video的DOM",videolist)
  window.addEventListener('wheel',function (event) {
    videolist[0].src = 'http://127.0.0.1:3000/image/22.mp4'
  })
</script>
</html>
